DS1856

NOT RECOMMENDED FOR NEW DESIGNS

Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection

Data Sheet (Rev. 1) Product Selection Table
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  • Documentation
  • Software Resources
  • Hardware Ecosystem
  • Tools & Simulations
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    Part Details

    • SFF-8472 Compatible
    • Five Monitored Channels (Temperature, VCC, MON1, MON2, MON3)
    • Three External Analog Inputs (MON1, MON2, MON3) That Support Internal and External Calibration
    • Scalable Dynamic Range for External Analog Inputs
    • Internal Direct-to-Digital Temperature Sensor
    • Alarm and Warning Flags for All Monitored Channels
    • Two Linear, 256-Position, Nonvolatile Temperature-Controlled Variable Resistors
    • Resistor Settings Changeable Every 2°C
    • Three Levels of Security
    • Access to Monitoring and ID Information Configurable with Separate Device Addresses
    • 2-Wire Serial Interface
    • Two Buffers with TTL/CMOS-Compatible Inputs and Open-Drain Outputs
    • Operates from a 3.3V or 5V Supply
    • -40°C to +95°C Operating Temperature Range
    DS1856
    Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection
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    Documentation

    Data Sheet 1

    Reliability Data 1

    Application Note 1

    Design Note 2

    Technical Articles 2

    Learn More

    Software Resources

    Can't find the software or driver you need?

    Request a Driver/Software

    Hardware Ecosystem

    Parts Product Life Cycle Description
    Analog-to-Digital Converters (ADCs) 1
    DS1859
    		NOT RECOMMENDED FOR NEW DESIGNS Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors
    Current Mirrors & Matched Devices 1
    DS1858
    		NOT RECOMMENDED FOR NEW DESIGNS Dual Temperature-Controlled Resistors with Three Monitors
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    Tools & Simulations

    IBIS Model 1

    Evaluation Kits

    eval board
    schematic 1
    DS1854EVKIT

    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

    Buy Now View Details

    Features and Benefits

    • Supports DS1854, DS1857, DS1858, and DS1859
    • Windows Software Allows Easy Access to Device Functionality and Handles 2-Wire Communication
    • ZIF Socket Allows All Four Device Types to be Evaluated from a Single Board
    • Software Allows User to Program Variable Resistors from a Text File
    • Real-Time Monitoring Software Continuously Monitors Temperature, VCC, Monitor Inputs, and Status Bytes
    • External Temperature Sensor Footprint for Evaluating the DS1857
    • EV Kit's Software can be Used to Configure or Monitor the Device in a Customer's Application Circuit

    Product Details

    The fiber optic monitor and control evaluation kit (EV kit) provides a hardware and software interface for evaluating the DS1854, DS1857, DS1858, and DS1859. The kit includes Microsoft Windows®-compatible software that performs the 2-wire functions required to change the device settings and monitor the device registers. In addition to the general communications functions provided by the software, it allows the resistors' temperature-addressed look-up tables to be programmed from a text file. The kit hardware includes test points that allow inputs to be connected to the external stimuli and outputs to be monitored by test equipment; jumpers can be used to configure the device for the customer's application.

    Applications

    • Diagnostic Monitoring
    • Instrumentation and Industrial Controls
    • Optical Transceivers
    • Optical Transponders
    • RF Power Amps

    eval board
    schematic 2
    DS1859EVKIT

    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

    Buy Now View Details

    Features and Benefits

    • Supports DS1854, DS1857, DS1858, and DS1859
    • Windows Software Allows Easy Access to Device Functionality and Handles 2-Wire Communication
    • ZIF Socket Allows All Four Device Types to be Evaluated from a Single Board
    • Software Allows User to Program Variable Resistors from a Text File
    • Real-Time Monitoring Software Continuously Monitors Temperature, VCC, Monitor Inputs, and Status Bytes
    • External Temperature Sensor Footprint for Evaluating the DS1857
    • EV Kit's Software can be Used to Configure or Monitor the Device in a Customer's Application Circuit

    Product Details

    The fiber optic monitor and control evaluation kit (EV kit) provides a hardware and software interface for evaluating the DS1854, DS1857, DS1858, and DS1859. The kit includes Microsoft Windows®-compatible software that performs the 2-wire functions required to change the device settings and monitor the device registers. In addition to the general communications functions provided by the software, it allows the resistors' temperature-addressed look-up tables to be programmed from a text file. The kit hardware includes test points that allow inputs to be connected to the external stimuli and outputs to be monitored by test equipment; jumpers can be used to configure the device for the customer's application.

    Applications

    • Diagnostic Monitoring
    • Instrumentation and Industrial Controls
    • Optical Transceivers
    • Optical Transponders
    • RF Power Amps

    eval board
    schematic 3
    DS185XEVKIT

    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

    Buy Now View Details

    Features and Benefits

    • Supports DS1854, DS1857, DS1858, and DS1859
    • Windows Software Allows Easy Access to Device Functionality and Handles 2-Wire Communication
    • ZIF Socket Allows All Four Device Types to be Evaluated from a Single Board
    • Software Allows User to Program Variable Resistors from a Text File
    • Real-Time Monitoring Software Continuously Monitors Temperature, VCC, Monitor Inputs, and Status Bytes
    • External Temperature Sensor Footprint for Evaluating the DS1857
    • EV Kit's Software can be Used to Configure or Monitor the Device in a Customer's Application Circuit

    Product Details

    The fiber optic monitor and control evaluation kit (EV kit) provides a hardware and software interface for evaluating the DS1854, DS1857, DS1858, and DS1859. The kit includes Microsoft Windows®-compatible software that performs the 2-wire functions required to change the device settings and monitor the device registers. In addition to the general communications functions provided by the software, it allows the resistors' temperature-addressed look-up tables to be programmed from a text file. The kit hardware includes test points that allow inputs to be connected to the external stimuli and outputs to be monitored by test equipment; jumpers can be used to configure the device for the customer's application.

    Applications

    • Diagnostic Monitoring
    • Instrumentation and Industrial Controls
    • Optical Transceivers
    • Optical Transponders
    • RF Power Amps

    eval board
    schematic 4
    DS1858EVKIT

    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

    Buy Now View Details

    Features and Benefits

    • Supports DS1854, DS1857, DS1858, and DS1859
    • Windows Software Allows Easy Access to Device Functionality and Handles 2-Wire Communication
    • ZIF Socket Allows All Four Device Types to be Evaluated from a Single Board
    • Software Allows User to Program Variable Resistors from a Text File
    • Real-Time Monitoring Software Continuously Monitors Temperature, VCC, Monitor Inputs, and Status Bytes
    • External Temperature Sensor Footprint for Evaluating the DS1857
    • EV Kit's Software can be Used to Configure or Monitor the Device in a Customer's Application Circuit

    Product Details

    The fiber optic monitor and control evaluation kit (EV kit) provides a hardware and software interface for evaluating the DS1854, DS1857, DS1858, and DS1859. The kit includes Microsoft Windows®-compatible software that performs the 2-wire functions required to change the device settings and monitor the device registers. In addition to the general communications functions provided by the software, it allows the resistors' temperature-addressed look-up tables to be programmed from a text file. The kit hardware includes test points that allow inputs to be connected to the external stimuli and outputs to be monitored by test equipment; jumpers can be used to configure the device for the customer's application.

    Applications

    • Diagnostic Monitoring
    • Instrumentation and Industrial Controls
    • Optical Transceivers
    • Optical Transponders
    • RF Power Amps

    eval board
    schematic 5
    DS1857EVKIT

    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

    Buy Now View Details

    Features and Benefits

    • Supports DS1854, DS1857, DS1858, and DS1859
    • Windows Software Allows Easy Access to Device Functionality and Handles 2-Wire Communication
    • ZIF Socket Allows All Four Device Types to be Evaluated from a Single Board
    • Software Allows User to Program Variable Resistors from a Text File
    • Real-Time Monitoring Software Continuously Monitors Temperature, VCC, Monitor Inputs, and Status Bytes
    • External Temperature Sensor Footprint for Evaluating the DS1857
    • EV Kit's Software can be Used to Configure or Monitor the Device in a Customer's Application Circuit

    Product Details

    The fiber optic monitor and control evaluation kit (EV kit) provides a hardware and software interface for evaluating the DS1854, DS1857, DS1858, and DS1859. The kit includes Microsoft Windows®-compatible software that performs the 2-wire functions required to change the device settings and monitor the device registers. In addition to the general communications functions provided by the software, it allows the resistors' temperature-addressed look-up tables to be programmed from a text file. The kit hardware includes test points that allow inputs to be connected to the external stimuli and outputs to be monitored by test equipment; jumpers can be used to configure the device for the customer's application.

    Applications

    • Diagnostic Monitoring
    • Instrumentation and Industrial Controls
    • Optical Transceivers
    • Optical Transponders
    • RF Power Amps
    DS1854EVKIT
    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    DS1859EVKIT
    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    DS185XEVKIT
    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    DS1858EVKIT
    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    DS1857EVKIT
    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

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